CVE-2026-90146

CVE CVE-2026-90146EUVD EUVD-2026-81739Published 2026-09-17T16:06:41.000ZLast changed 2026-09-18T17:53:23.000ZCVSS 7.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: bpf, xdp: move offload check into dev_xdp_install() bpf_xdp_link_update() calls dev_xdp_install() directly and skips dev_xdp_attach(), so the checks in dev_xdp_attach() do not run. A user can make an XDP link with a normal program and then swap in an offloaded or device-bound program with BPF_LINK_UPDATE, which puts it on the software path. dev_xdp_install() is the one place all three paths go through: "ip link set xdp" and BPF_LINK_CREATE reach it via dev_xdp_attach(), and BPF_LINK_UPDATE calls it directly. So move the program checks (offloaded, bound to another device, device-bound in generic mode, native vs generic, DEVMAP and CPUMAP) there, and keep only the netlink-flag check (XDP_FLAGS_UPDATE_IF_NOEXIST) in dev_xdp_attach().

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 6.18.52; patch: 7.3-rc1; 026a4c28e1db3b0cb99cd9a3e495d4a8b632fa74 <ea7b35dcc9430293b861bc7bad0c546f193c85f9; patch: 7.2.6; patch: 0; 026a4c28e1db3b0cb99cd9a3e495d4a8b632fa74 <03022dd874070768a7099f18b1944c633641315f; 026a4c28e1db3b0cb99cd9a3e495d4a8b632fa74 <ad27ed7d2309419a129078d781504f486b1b469a; 5.9

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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